A wire fixed at the upper end stretches by length by applying a force F. The work done in…
Physics · JEE Main · NTA Exams — Properties of Solids and Liquids
A wire fixed at the upper end stretches by length \(\ell\)by applying a force F. The work done in stretching is :
- \(\frac{\mathrm{F}}{2 \ell}\)
- \(\mathrm{F} \ell\)
- \(2 \mathrm{~F} \ell\)
- \(\frac{\mathrm{F} \ell}{2}\)
Answer
(D) F 2
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